General Science crossword

How to play

Use the numbered Across and Down clues to fill the white squares. Each answer is one word. Shared squares belong to both answers, and black squares separate the words.

Tap a square to select its word; tap the same square again to switch between Across and Down at a crossing. Tap a clue to jump to its first square. Type letters on your phone keyboard or computer, use Backspace to erase, and use arrow keys to move on a computer.

Check word checks the selected answer; Check puzzle checks every square. Squares that need another look are highlighted. Reveal fills every answer and shows the answers list. The timer starts with your first letter and stops when every answer matches. Share your result when you finish.

About General Science

Biology, chemistry, physics and earth science terms in one grid.

Every layout is generated and checked by code. Clues are question stems from the verified bank, and answers are single words from the correct options. A checker reads every Across and Down run from the finished grid, checks its answer and confirms that all the words connect. A topic page and seed always give the same puzzle; New puzzle changes the seed. The daily mini changes at midnight UTC.

Review the subject with our General Science practice tests, or try the topic word search.

Tips

Start with a clue you know, then use its crossing letters to narrow the other answers. The number in brackets tells you how many letters to enter.

A criss-cross layout has black squares around the interlocking words. Work through both clue lists, and use the highlighted clue above the board to keep your place on a phone.

Across

1. During protein synthesis, the sequence of three mRNA nucleotides that specifies one amino acid is a (5)
4. When a person's blood glucose level is too high, which hormone is released to lower it? (7)
5. A blockage in a coronary artery would most directly affect the (5)
7. What is the largest organ of the human body? (4)
11. In Mendelian genetics, an allele that masks the expression of another allele is called (8)
12. The daily rise and fall of ocean tides on Earth are primarily caused by the gravitational pull of the (4)

Down

2. Deep-ocean sediment composed mainly of the shells of tiny organisms is called: (4)
3. In a flowering plant, red flower color (R) is incompletely dominant over white (r). What phenotype results from the genotype Rr? (4)
6. In a DNA molecule, adenine always pairs with (7)
7. Which taste is characteristically associated with acidic substances such as lemon juice? (4)
8. If you see a first-quarter moon just rising in the east, what time of day is it approximately? (4)
9. A segment of DNA that codes for a specific protein or functional RNA molecule is called a (4)
10. What is the smallest unit of an element that retains its chemical properties? (4)